Dioptase

specimen number:
2062989

location:
Altyn-Tyube, Bukhar-Zhyrau, Karaganda, Kazakhstan

description:
From the type locality for the species, lustrous emerald green crystals of dioptase measuring to 0.8 cm in size on the top of matrix. This is in good condition with very minimal damage along the edges of the piece only. All of the prominent crystals are in good condition. The specimen comes with a previous label from the collection of Ray DeMark who acquired it in 1991.

The Altyn-Tyube deposit in the Bukhar-Zhyrau district of the Karaganda region in Kazakhstan is famous historically as the type locality for dioptase. Geologically, the deposit formed within the oxidized zones of copper deposits where silica-rich fluids interacted with carbonate rocks, creating cavities in quartz veins and limestone filled with vibrant green crystals. In the late 18th century, copper miners working the area uncovered these striking green crystals, initially mistaking them for emeralds before mineralogists officially identified them as a distinct new mineral species in 1797. Since then, the site has remained well-known among mineral collectors for producing classic, highly prized specimens of dioptase.

Questions about this specimen?
Send an email or call us: 314-341-1811.